Heat canola oil in a saute pan and season tuna with salt, pepper, and paprika. Sear both sides and remove to a utility platter to let rest.

While tuna is resting, arrange bread slices on baking sheet and toast in oven.

Slice tuna and assemble appetizers by spooning hummus on each toast round and then topping with a piece of tuna. Top tuna with another small amount of hummus, about 1/8 teaspoon, and a small sprig of parsley.